EP3130991B1 - Écran tactile et procédé de commande associé, et dispositif d'affichage - Google Patents

Écran tactile et procédé de commande associé, et dispositif d'affichage Download PDF

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Publication number
EP3130991B1
EP3130991B1 EP14888793.8A EP14888793A EP3130991B1 EP 3130991 B1 EP3130991 B1 EP 3130991B1 EP 14888793 A EP14888793 A EP 14888793A EP 3130991 B1 EP3130991 B1 EP 3130991B1
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European Patent Office
Prior art keywords
electrode
touch
common electrode
signal
touch screen
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EP14888793.8A
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German (de)
English (en)
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EP3130991A1 (fr
EP3130991A4 (fr
Inventor
Xiaoliang Ding
Lei Wang
Hongjuan Liu
Xue Dong
Haisheng Wang
Weijie Zhao
Yingming Liu
Shengji YANG
Chunlei Wang
Tao REN
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BOE Technology Group Co Ltd
Beijing BOE Optoelectronics Technology Co Ltd
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BOE Technology Group Co Ltd
Beijing BOE Optoelectronics Technology Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • G06F3/04184—Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

Definitions

  • the present invention relates to a touch screen, a driving method of the touch screen and a display device.
  • Touch screens can be divided into two types including add-on touch screens and in-cell touch screens.
  • An in-cell touch screen with a touch sensing electrode being embedded inside a liquid crystal display panel, can reduce a thickness of a device as a whole and reduce manufacture cost.
  • an in-cell touch screen includes a color filter substrate 10 and an array substrate 20 that are disposed opposite to each other.
  • the color filter substrate 10 includes a first base substrate 1, a plurality of color pixel areas 2 provided on the first base substrate 1, and light-block areas 3 that are located between the color pixel areas 2.
  • Touch sensing electrodes 4 are provided at positions of the light-block areas 3.
  • An array substrate 20 includes a second base substrate 7 and a transparent conductive layer disposed on the second base substrate 7.
  • the transparent conductive layer includes touch driving electrodes 6 and common electrodes 5, and the common electrodes correspond to the position of the touch sensing electrodes 4 on the color filter substrate 10.
  • the touch sensing electrodes 4 Upon touch driving signals (Tx) being applied on the touch driving electrodes 6, the touch sensing electrodes 4 receive touch sensing signals (Rx), and then by calculation of variation of capacitance formed by the touch sensing electrodes 4 and the touch driving electrodes 6 before and after the touch operation by a finger, it is determined whether a touch occurs or not, so as to realize a touch function.
  • a common electrode signal (Vcom) is applied on the common electrodes 5 to realize display.
  • CN 103 049 157 A discloses a capacitance type embedded touch screen and a display device.
  • a common electrode layer is connected in a manner of a whole surface in a Thin Film Transistor (TFT) array substrate is divided to form mutually insulated and crossly arranged touch driving electrodes and common electrodes; a touch sensing electrode is arranged on a color film substrate; and time-division driving is performed on the touch driving electrodes to realize a touch function and a display function.
  • TFT Thin Film Transistor
  • the projection of the touch sensing electrode on the TFT array substrate is located in an area where the common electrodes of the touch screen are provided, and the common electrodes and the touch driving electrodes are located at the same layer but insulated mutually, an area generated between the touch sensing electrode and the touch driving electrodes is avoided.
  • At least one embodiment of the present disclosure provides a touch screen comprising: a color filter substrate and an array substrate that are provided opposite to each other.
  • the color filter substrate comprises a first base substrate and a first electrode disposed on the first base substrate.
  • the array substrate comprises a second base substrate and a transparent conductive layer that is disposed on the second base substrate, and the transparent conductive layer comprises a second electrode and a common electrode.
  • the first electrode and the second electrode are staggered with each other.
  • the first electrode is a touch sensing electrode and the second electrode is a touch driving electrode, or the second electrode is a touch sensing electrode and the first electrode is a touch driving electrode.
  • the first electrode is configured for receiving a touch sensing signal and and the second electrode is configured for applying a touch driving signal, and the signal over the common electrode is the same as that over the first electrode; in a display time period, the second electrode and the common electrode are configured for loading a common electrode signal.
  • first electrode and the second electrode are staggered with each other, that is, the first electrode and the second electrode are offset from each other, without being directly facing each vertically.
  • a time-shared display and touch operation is employed.
  • time of a frame is divided into a display time period and a touch time period; in the touch time period, a touch sensing electrode and a common electrode respectively receives a touch sensing signal, a touch driving electrode is applied with a touch driving signal and performs coupling of the touch drive signal in the touch time period to produce a touch sensing signal, and the touch sensing signal is output via the touch sensing electrode and the common electrode.
  • the common electrode and the touch driving electrode are both applied with common electrode signal, under such a case, the common electrode and the touch sensing electrode collectively function as a common electrode to realize display.
  • a common electrode layer can be made from a transparent conductive material, such as ITO (indium tin oxide) or IZO (indium zinc oxide).
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • the first electrode is a touch sensing electrode and the second electrode is a touch driving electrode
  • the second electrode is a touch sensing electrode and the first electrode is a touch driving electrode
  • a touch sensing electrode is employed to receive a touch sensing signal in a touch time period and a touch driving electrode is employed to apply a touch driving signal in a touch time period.
  • the first electrode is a touch sensing electrode and the second electrode is a touch driving electrode is taken as an example to explain in detail.
  • the first electrode in a touch time period, is configured for receiving a touch sensing signal and and the second electrode is configured for applying a touch driving signal, and the common electrode and the first electrode are applied with a same signal.
  • the second electrode and the common electrode are for applying a common electrode signal. That is, in a touch time period, the first electrode is employed to receive a touch sensing signal and the second electrode is employed to apply a touch driving signal, under such a case, the signal of the common electrode is the same as that of the first electrode, both receiving touch sensing signal.
  • the second electrode and the common electrode are employed to apply a common electrode signal.
  • the first electrode in a touch time period, is employed to apply a touch driving signal and the second electrode is employed to receive a touch sensing signal, under such a case, the signal of the common electrode is the same as that of the first electrode, both being employed to apply a touch driving signal.
  • a display time period a display function is realized by applying a common electrode signal on a common electrode and a touch driving electrode.
  • the first electrode in a touch time period, is for receiving a touch sensing signal and the second electrode is for applying a touch driving signal.
  • the signal of the common electrode is the same as that of the first electrode with both being employed to receive a touch sensing signal is taken as an example for detailed description.
  • a touch sensing electrode 4 on a color filter substrate 10 at a touch position receives a touch sensing signal (Rx) and a touch driving electrode 6 on an array substrate 20 applies a touch driving signal (Tx), with a common electrode 5 receiving the touch sensing signal (Rx). Therefore, in the touch time period, a touch field is formed between the touch sensing electrode 4 on the color filter substrate 10 and the common electrode 5 on the array substrate 20, and a touch field is formed between the touch sensing electrode 4 on the color filter substrate 10 and the touch driving electrode 6 on the array substrate 20 as well, which can increase mutual capacitance between the touch driving electrode TX and the touch sensing electrode RX.
  • a common electrode 5 and a touch driving electrode 6 on an array substrate are applied with a common electrode signal (Vcom) at the same time, so as to realize display.
  • Vcom common electrode signal
  • At least one embodiment of the present disclosure provides a touch screen, wherein the first electrode is a touch sensing electrode and the second electrode is a touch driving electrode, or the second electrode is a touch sensing electrode and the first electrode is a touch driving electrode.
  • the touch sensing electrode is configured for receiving touch sensing electrode in a touch time period and the touch driving electrode is configured for applying touch driving signal in the touch time period.
  • the first electrode and the second electrode respectively receives a touch sensing signal and applies a touch driving signal
  • the signal of the common electrode is the same as that of the first electrode.
  • the second electrode and the common electrode are employed to apply a common electrode signal.
  • the first electrode forms a touch field respectively with the common electrode and the second electrode, which is in favor of strengthening touch magnitude.
  • the signal of the touch sensing electrode is the same as that of the common electrode, so electric potential difference is not generated between the touch sensing electrode and the common electrode, which is in favor of reducing parasite capacitance and noise interference.
  • the color filter substrate includes a color film layer and a black matrix film layer; the first electrode corresponds to the black matrix.
  • the array substrate includes a pixel electrode layer, with the second electrode being corresponding to the pixel electrode.
  • a color filter substrate includes a first base substrate and includes a black matrix film layer and a color film layer that are provided on the first base substrate.
  • the first electrode corresponds to the black matrix film layer, that is, the touch sensing electrode is disposed at the position of a corresponding black matrix.
  • the touch sensing electrode can be a transparent electrode, under such a case, the touch sensing electrode can also be provided at a position, corresponding to a color film layer, on the color filter substrate.
  • the array substrate includes a pixel electrode layer and a transparent conductive layer, with the pixel electrode layer including a pixel electrode, and the transparent conductive layer including a common electrode and a second electrode; in addition, the second electrode is provided at a position corresponding to the pixel electrode.
  • a second electrode is applied with a common electrode signal, that is, a horizontal electric field is formed by a pixel electrode and a second electrode to drive liquid crystal for display.
  • a common electrode on the array substrate is connected to a first electrode on the color filter substrate. Because of a first electrode being electrically connected to a common electrode, a touch sensing signal will be received by them at a same time.
  • a common electrode on the array substrate is electrically connected, via anisotropy conductive adhesive (e.g., including conductive particle (for example, metal balls)), with a first electrode on the color filter substrate, so as to realize synchronized reception of touch sensing signal.
  • the signal of a common electrode is the same as that of a first electrode, allowing electric potential of both to be equal to each other, thus reducing parasite capacitance between the first electrode and the common electrode, which can improve touch effect.
  • the common electrode is provided at a position corresponding to that of the first electrode. That is, the touch sensing electrode is provided at a position correspond to that of the common electrode, under such a case, because the touch sensing electrode and the common electrode receive the same sensing signal and constitute a new touch sensing electrode, which reduces the directly facing area of the common electrode and the touch sensing electrode, hence reducing parasite capacitance of the touch sensing electrode.
  • the width, in a direction that a first electrode is arranged, of the common electrode is greater than the width of the first electrode.
  • the width of the common electrode in the direction that the first electrode is arranged is greater than the width of the first electrode.
  • the width of the common electrode 5 in a direction 101 is greater than a width of the sensing electrode 4 as illustrated in Fig.3 . Therefore, it is possible to further increase mutual capacitance between a touch sensing electrode and a touch driving electrode, so as to benefit signal reception and strength touch effect.
  • the common electrode and a first electrode are of a same structure, and they both form a finger interleaving electrode structure with the second electrode.
  • a sensing electrode 4 on a color filter substrate can be a multi-finger structure as illustrated in Fig.3 while a common electrode 5 and a driving electrode 6 on an array substrate 20 can be a finger interleaving structure as illustrated in Fig.4 .
  • a sensing electrode 4 on a color filter substrate 1 is provided at a position corresponding to the position of a common electrode 5 on an array substrate, and so the sensing electrode 4 is of a same shape as that of the common electrode 5.
  • a width of a common electrode in a direction that a first electrode is arranged is greater than that the width of the sensing electrode 4. Under such a case, mutual capacitance of a sensing electrode 4 and a driving electrode 5 is increased, which improves touch sensitivity and accuracy.
  • a sensing electrode 4 can be vertically disposed opposite to a common electrode 5.
  • a sensing electrode 4 can be as illustrated in Fig.3
  • a driving electrode 6 and a common electrode 5 can be as illustrated in Fig.4
  • a specific connection mode of a driving electrode 6 can be as illustrated in Fig.5 .
  • Driving electrodes 6, namely, Tx(V) are electrically connected via corresponding lead wires Tx respectively, so as to form a plurality of driving electrodes that are perpendicular to sensing electrodes in a direction (namely, a direction indicated by 102) that sensing electrodes are arranged, namely, the direction perpendicular to the direction indicated by 101.
  • a case that driving electrodes 6 include Tx1(V) - Tx8(V) and lead wires include Tx1 - Tx8 is taken as an example for detail explanation.
  • a schematic bottom view of a touch screen which comprises the sensing electrode 4 as illustrated in Fig.3 and the common electrode 5 and the driving electrode 6 as illustrated in Fig.4 , is illustrated in Fig.6 .
  • a drive electrode Tx1(V) is electrically connected via Tx1
  • a driving electrode Tx2(V) is electrically connected via Tx2
  • a driving electrode Tx3(V) is electrically connected via Tx3.
  • driving electrodes 6 are arranged in rows in a direction indicated by 102, and are perpendicular to sensing electrodes 4 that are formed in rows in a direction indicated by 101, so as to realize touch function with the sensing electrodes 4 and the driving electrodes 6.
  • a center-to-center distance between a driving electrode 6 and a sensing electrode 6 is 5-6 mm.
  • a touch sensing electrode vertically correspond to a touch driving electrode, and under such a case, a common electrode can be provided at a position corresponding to the position of a black matrix of a color film layer.
  • At least one embodiment of the present disclosure provides a driving method of a touch screen, including: in a touch time period, a first electrode and a second electrode respectively receives a sensing signal and applies a touch driving signal, and a signal of the common electrode is the same as that of the first electrode; in a display time period, the second electrode and the common electrode apply common electrode signal.
  • the first electrode and the second electrode respectively receives touch the sensing signal and applies the touch driving signal, and the signal of the common electrode is the same as the signal of the first electrode; in the display time period, the second electrode and the common electrode apply the common electrode signal.
  • the first electrode receives a touch sensing signal and the second electrode applies a touch driving signal
  • the signal of the common electrode is the same as that of the first electrode, that is, the common electrode receives the touch sensing signal
  • the second electrode and the common electrode applies a common electrode signal.
  • the first electrode applies a touch driving electrode and the second electrode receives a touch sensing electrode, and at the same time, the signal of the common electrode is the same as the signal of the first electrode, that is, the common electrode applies a touch driving signal; in a display time period, a common electrode signal is applied on the common electrode and the driving electrode to realize display function.
  • a touch screen provided in at least one embodiment of the present disclosure, by allowing a common electrode and a first electrode to receive a touch sensing signal at a same time or apply a touch driving signal at a same time in a touch time period, can reduce parasite capacitance between the common electrode and the first electrode.
  • the signal of the common electrode is the same as the signal of the first electrode, a touch field is formed between the common electrode and the second electrode, so that touch sensitivity is strengthen and meanwhile noise interference is reduced.
  • a driving method is provided in an embodiment of the present disclosure, applied to any touch screen provided in an embodiment of the present disclosure above, and a common electrode on the array substrate is electrically connected with a first electrode on the color filter substrate. Because the first electrode and the common electrode are electrically connected with each other, they are applied with a same signal.
  • the common electrode on the array substrate is electrically connected with the first electrode on the color filter substrate via an anisotropy conductive adhesive, so as to achieve synchronized reception of touch sensing signal.
  • a common electrode is electrically connected with a first electrode, thus a common electrode, a first electrode and a second electrode are applied with a common electrode signal at a same time.
  • the display device can be display device such as a liquid crystal display, an electronic paper, an OLED (Organic Light-Emitting Diode) display and any product or component having a display function that include these devices such as a TV set, a digital camera, a cell-phone, a tablet computer or the like.
  • display device such as a liquid crystal display, an electronic paper, an OLED (Organic Light-Emitting Diode) display and any product or component having a display function that include these devices such as a TV set, a digital camera, a cell-phone, a tablet computer or the like.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Geometry (AREA)
  • Liquid Crystal (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Position Input By Displaying (AREA)

Claims (10)

  1. Écran tactile, comprenant :
    un substrat de filtre couleur (10) qui comprend un premier substrat de base (1) et une première électrode (4) qui est disposée sur le premier substrat de base (1) ;
    un substrat de matrice (20) qui comprend un second substrat de base (7) et une couche conductrice transparente qui est disposée sur le second substrat de base (7), dans lequel la couche conductrice transparente comprend une seconde électrode (6) et une électrode commune (5) ; dans lequel :
    le substrat de filtre couleur (10) et le substrat de matrice (20) sont disposés à l'opposé l'un de l'autre de sorte que la première électrode (4) et la seconde électrode (6) sont décalées l'une par rapport à l'autre, sans qu'elles ne se fassent face directement l'une l'autre dans une direction qui est perpendiculaire au substrat de filtre couleur (10) et au substrat de matrice (20) ;
    l'écran tactile est configuré de manière à ce qu'il utilise un affichage et une opération de contact tactile en temps partagé, dans lequel le temps pendant lequel une trame ou image doit être affichée est divisé selon une période de temps d'affichage et une période de temps d'opération de contact tactile, et l'écran tactile est configuré de manière à ce que :
    pendant la période de temps de contact tactile, il utilise la première électrode (4) et l'électrode commune (5) en tant qu'électrode de détection de contact tactile pour recevoir un signal de détection de contact tactile (Rx) et la seconde électrode (6) en tant qu'électrode de commande de contact tactile pour appliquer un signal de commande de contact tactile (Tx), ou il utilise la première électrode (4) et l'électrode commune (5) en tant qu'électrode de commande de contact tactile pour recevoir le signal de commande de contact tactile (Tx) et la seconde électrode (6) en tant qu'électrode de détection de contact tactile pour appliquer le signal de détection de contact tactile (Rx) ; et de manière à ce que :
    pendant la période de temps d'affichage, il applique sur la seconde électrode (6) et sur l'électrode commune (5) un signal d'électrode commune (Vcom).
  2. Écran tactile selon la revendication 1, dans lequel l'électrode commune (5) sur le substrat de matrice (20) est connectée électriquement à la première électrode (4) sur le substrat de filtre couleur (10).
  3. Écran tactile selon la revendication 2, dans lequel l'électrode commune (5) sur le substrat de matrice (20) est connectée électriquement à la première électrode (4) sur le substrat de filtre couleur (10) via un adhésif conducteur par anisotropie.
  4. Écran tactile selon l'une quelconque des revendications 1 à 3, dans lequel l'électrode commune (5) est prévue en une position qui correspond à la première électrode (4).
  5. Écran tactile selon la revendication 4, dans lequel une largeur de l'électrode commune (5) dans une direction (101) dans laquelle la première électrode (4) est agencée est plus grande qu'une largeur de la première électrode (4).
  6. Écran tactile selon l'une quelconque des revendications 1 à 5, dans lequel l'électrode commune (5) présente la même structure que celle de la première électrode (4), et l'électrode commune (5) et la première électrode (4) sont toutes deux agencées de manière à ce qu'elles forment une structure d'électrodes à doigts imbriqués avec la seconde électrode (6).
  7. Écran tactile selon l'une quelconque des revendications 1 à 6, dans lequel le substrat de filtre couleur (10) comprend une couche de film couleur et une couche de film de matrice noire, la première électrode (4) étant en correspondance avec la matrice noire.
  8. Écran tactile selon l'une quelconque des revendications 1 à 7, dans lequel le substrat de matrice (20) comprend en outre une couche d'électrode de pixel qui comprend une électrode de pixel, une position de la seconde électrode (6) étant en correspondance avec une position de l'électrode de pixel.
  9. Dispositif d'affichage, comprenant l'écran tactile selon l'une quelconque des revendications 1 à 8.
  10. Procédé de commande pour commander un écran tactile, soit l'écran tactile selon l'une des revendications 1 à 8, le procédé comprenant :
    pendant une période de temps de contact tactile, la réception du signal de détection de contact tactile (Rx) au moyen de la première électrode (4) et de l'électrode commune (5), et l'application du signal de commande de contact tactile (Tx) sur la seconde électrode (6), ou l'application du signal de commande de contact tactile (Tx) sur la première électrode (4) et sur l'électrode commune (5) et la réception du signal de détection de contact tactile (Rx) au moyen de la seconde électrode (6) ; et
    pendant une période de temps d'affichage, l'application du signal d'électrode commune (Vcom) sur la seconde électrode (6) et sur l'électrode commune (5).
EP14888793.8A 2014-04-09 2014-07-30 Écran tactile et procédé de commande associé, et dispositif d'affichage Active EP3130991B1 (fr)

Applications Claiming Priority (2)

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CN201410141667.3A CN103941916B (zh) 2014-04-09 2014-04-09 一种触摸屏及其驱动方法、显示装置
PCT/CN2014/083356 WO2015154349A1 (fr) 2014-04-09 2014-07-30 Écran tactile et procédé de commande associé, et dispositif d'affichage

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EP3130991A1 EP3130991A1 (fr) 2017-02-15
EP3130991A4 EP3130991A4 (fr) 2017-11-15
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JP6734771B2 (ja) * 2016-12-28 2020-08-05 株式会社ジャパンディスプレイ 表示装置
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Publication number Publication date
US20160274721A1 (en) 2016-09-22
US10101847B2 (en) 2018-10-16
CN103941916B (zh) 2017-06-09
EP3130991A1 (fr) 2017-02-15
CN103941916A (zh) 2014-07-23
WO2015154349A1 (fr) 2015-10-15
EP3130991A4 (fr) 2017-11-15

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